To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an overload cost), add any cost increases, then apply any cost reductions
Reanimate makes that happen for a single black mana, bringing any creature back under your control at the cost of life equal to its mana value
That said, its almost like a staple in cards that care about going wide, tokens, and the like
Ursula, Deceiver of All is a card thats ideal for any Lorcana player who has a particular affinity for using song cards in their deck
PANTHER ROBOT Usually the Affinity for Artifacts creatures that can be cast for free arent an 8/8 reach trample threat, so expect to see this one slot into any number of artifact decks, particularly the ones that care about free casting to enable combos
Zariel does just one worse with +1/+0 and haste for her +1 ability for one less Green mana and four mana total